[15.,2ax+3by=a+2b],[,3ax+2by=2a+b]

Solve the following system of equations by method of cross-multiplication: 2ax+3by=a+2b,quad 3ax+2by=2a+b

(ax)/b-(by)/a=a+b , ax-by=2ab

(ax)/(b)-(by)/(a)=a+b,ax-by=2ab

x+y=a+b,ax-by=a^(2)-b^(2)

If A=[[1, 2, 3], [-1, 1, 2], [1, 2, 4]], B=[[1], [2], [3]] and AX=B , then X=

If 2a=b, the pair of equations ax+by=2a^(2)-3b^(2),x+2y=2a-6b possess

{:(x + y = a + b),(ax - by = a^(2) - b^(2)):}

6(ax+by)=3a+2b&6(bx-ay)=3b-2a

Solve the following equations by Elimination method : 6(ax+by)=3a+2b 6(bx-ay)=3b-2a .

If the arithmetic mean of the numbers x_1, x_2, x_3, ..., x_n is barx, then the arithmetic mean of the numbers ax_1 +b, ax_2 +b, ax_3 +b, ....,ax_n +b, where a, b are two constants, would be